https://en.wikipedia.org/wiki/Sulfite#Wine https://en.wikipedia.org/wiki/Sulfite#Wine > Sulfites occur naturally in all wines to some extent. Sulfites are comm

https://en.wikipedia.org/wiki/Sulfite#Wine https://en.wikipedia.org/wiki/Sulfite#Wine > Sulfites occur naturally in all wines to some extent. Sulfites are commonly introduced to arrest fermentation at a desired time, and may also be added to wine as preservatives to prevent spoilage and oxidation at several stages of the winemaking. Sulfur dioxide (SO2) protects wine not only from oxidation, but also from bacteria.